17374-ZY3-010 Grommet, Muffler - Overview. The 17374-ZY3-010 Grommet, Muffler is a vital component in Honda marine engine systems, specifically supporting the exhaust system. This grommet serves as a vibration dampener and sealing element for the muffler assembly, ensuring reliable performance by minimizing noise and preventing water intrusion. Designed to fit precisely, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. An OEM gen